甲基乙烯酮 、 3-(2-Trimethylsilylethoxycarbonyl)pyridinium-N-benzoylimid 生成
<7α,8α>-2-Benzoyl-8-methyl-9-oxo-1,2-diazabicyclo<5.2.0>nona-3,5-dien-4-carbonsaeure-(2-trimethylsilylethylester) 、 <7α,8α>-2-Benzoyl-8-methyl-9-oxo-1,2-diazabicyclo<5.2.0>nona-3,5-dien-6-carbonsaeure-(2-trimethylsilylethylester)